德福科技(301511.SZ)：3um超薄载体铜箔已批量稳定供货，目前新增10余家客户送样验证

Core Viewpoint - Defu Technology (301511.SZ) has successfully achieved stable mass production of its self-developed 3um ultra-thin carrier copper foil, marking a significant step in domestic substitution for this product, with over 10 new customers currently validating samples [1] Group 1 - The company has developed a 3um ultra-thin carrier copper foil that is now being supplied in bulk [1] - The product has achieved domestic substitution, indicating a shift away from reliance on foreign suppliers [1] - More than 10 new customers are currently engaged in sample validation, suggesting growing interest and potential market expansion [1]